Why, dear supplier-of-shiny-stuff, do you give me an option for a shipping address in addition to the entry for the billing address?

In my naivety, I assumed it was for me to specify a different address, one at which I knew delivery would be achievable. Since UPS have just attempted delivery to the billing address, it's obviously not that.

Luton is down the A505. Which is a great little road between here and the A1, but which is thereafter infested with 30 limits (and more speed cameras that I've seen anywhere else) for much of the rest of the distance. The AA route finder alleges 40 minutes from here to Luton Airport - I'd allow an hour each way.